Television signals on earth cannot be received at distances greater than $100\, km$ from the transmission station. The reason behind this is that
- AThe receiver antenna is unable to detect the signal at a distance greater than $100\, km$
- BThe $TV$ programme consists of both audio and video signals
- CThe $TV$ signals are less powerful than radio signals
- DThe surface of earth is curved like a sphere
Explore More
Similar Questions
Match List-$I$ with List-$II$:
List-$I$ (Layer of atmosphere) List-$II$ (Approximate height over earth's surface) $(A)$ $F_1$-Layer $(I)$ $10\,km$ $(B)$ $D$-Layer $(II)$ $170-190\,km$ $(C)$ Troposphere $(III)$ $100\,km$ $(D)$ $E$-Layer $(IV)$ $65-75\,km$
Choose the correct answer from the options given below:
| List-$I$ (Layer of atmosphere) | List-$II$ (Approximate height over earth's surface) |
|---|---|
| $(A)$ $F_1$-Layer | $(I)$ $10\,km$ |
| $(B)$ $D$-Layer | $(II)$ $170-190\,km$ |
| $(C)$ Troposphere | $(III)$ $100\,km$ |
| $(D)$ $E$-Layer | $(IV)$ $65-75\,km$ |
Choose the correct answer from the options given below:
The modulation index used in amplitude modulation of a message signal of peak voltage $10 \,V$ is $0.5$. By how much should the peak voltage of the carrier signal be changed, so as to obtain the modulation index of $0.8$, keeping the peak voltage of the message signal the same as before?
$A$ transmitting antenna is kept on the surface of the earth. The minimum height of the receiving antenna required to receive the signal in line-of-sight at $4\,km$ distance from it is $x \times 10^{-2}\,m$. The value of $x$ is (Let radius of earth $R = 6400\,km$).
Ultra high frequency $(UHF)$ band stands for
Easy
View Solution$A$ $TV$ transmitting antenna is $128 \ m$ tall. If the receiving antenna is at the ground level,the maximum distance between them for satisfactory communication in line-of-sight mode is (radius of the earth $R_e = 6.4 \times 10^6 \ m$):
DifficultTS EAMCET 2014
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo